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YMAB

Y-mAbs Therapeutics
YMAB

Delisted

YMAB was delisted on the 15th of September, 2025.

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59 hedge funds and large institutions have $251M invested in Y-mAbs Therapeutics in 2019 Q2 according to their latest regulatory filings, with 20 funds opening new positions, 25 increasing their positions, 9 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

400% more first-time investments, than exits

New positions opened: 20 | Existing positions closed: 4

178% more repeat investments, than reductions

Existing positions increased: 25 | Existing positions reduced: 9

31% more funds holding

Funds holding: 45 → 59 (+14)

13% more capital invested

Capital invested by funds: $222M → $251M (+$28.6M)

7.29% more ownership

Funds ownership: 24.8% → 32.09% (+7.3%)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

Holders
59
Holders Change
+14
Holders Change %
+31.11%
% of All Funds
1.28%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
20
Increased
25
Reduced
9
Closed
4
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$18M
2
AG
Artal Group
Luxembourg
+$9.19M
3
CAM
Cormorant Asset Management
Massachusetts
+$6.53M
4
State Street
State Street
Massachusetts
+$5.51M
5
Vanguard Group
Vanguard Group
Pennsylvania
+$4.71M

Top Sellers

Rank Fund Capital Flow
1
SCM
Scopia Capital Management
New York
-$24.1M
2
VIA
Vident Investment Advisory
Georgia
-$125K
3
TAM
Tiverton Asset Management
Delaware
-$78.1K
4
Barclays
Barclays
United Kingdom
-$72K
5
FCM
Flinton Capital Management
Pennsylvania
-$39K
Name Holding Trade Value Shares
Change 		Change in
Stake
California State Teachers Retirement System (CalSTRS)
26
California State Teachers Retirement System (CalSTRS)
California
$717K +$469K +20,429 +187%
Point72 Asset Management
27
Point72 Asset Management
Connecticut
$686K +$689K +30,000 New
TD Asset Management
28
TD Asset Management
Ontario, Canada
$582K +$60.3K +2,624 +11%
RhumbLine Advisers
29
RhumbLine Advisers
Massachusetts
$490K +$492K +21,437 New
New York State Common Retirement Fund
30
New York State Common Retirement Fund
New York
$476K +$423K +18,400 +767%
Squarepoint
31
Squarepoint
New York
$451K +$452K +19,700 New
Bank of America
32
Bank of America
North Carolina
$441K +$162K +7,054 +58%
Wells Fargo
33
Wells Fargo
California
$438K +$357K +15,526 +422%
Deutsche Bank
34
Deutsche Bank
Germany
$368K +$169K +7,348 +84%
Barclays
35
Barclays
United Kingdom
$300K -$72K -3,133 -19%
Manulife (Manufacturers Life Insurance)
36
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$299K +$301K +13,089 New
AIG
37
American International Group
New York
$296K +$195K +8,498 +191%
Swiss National Bank
38
Swiss National Bank
Switzerland
$290K +$292K +12,700 New
State of Wisconsin Investment Board
39
State of Wisconsin Investment Board
Wisconsin
$231K +$232K +10,100 New
MIM
40
MetLife Investment Management
New Jersey
$230K +$231K +10,071 New
Citigroup
41
Citigroup
New York
$150K +$108K +4,685 +252%
TAM
42
Tiverton Asset Management
Delaware
$113K -$78.1K -3,400 -41%
Legal & General Group
43
Legal & General Group
United Kingdom
$78K +$53.2K +2,318 +216%
FCM
44
Flinton Capital Management
Pennsylvania
$57K -$39K -1,700 -41%
UBS Group
45
UBS Group
Switzerland
$54K +$20.4K +887 +60%
TAM
46
Tyers Asset Management
Texas
$47K -$32.2K -1,400 -41%
SO
47
STRS Ohio
Ohio
$43K – – –
AIP
48
Ameritas Investment Partners
Nebraska
$41K +$27.5K +1,197 +208%
Bank of Montreal
49
Bank of Montreal
Ontario, Canada
$39K +$39.2K +1,709 New
NA
50
Neuburgh Advisers
California
$37K -$25.3K -1,100 -41%
1
2
3

YMAB Hedge Fund Activity: Q2 2019 in Review

59 of the 4,605 institutional investors tracked by Wall St. Rank reported a position in Y-mAbs Therapeutics (YMAB) for Q2 2019, worth a combined $251M — up 13% from $222M a quarter earlier.

Buyers outnumbered sellers: 20 funds opened new YMAB positions and 4 closed out — a net gain of 16 holders — while 25 added to existing stakes and 9 trimmed.

The largest buyer was BlackRock, adding an estimated $18M. The largest seller was Scopia Capital Management, exiting entirely with an estimated $24.1M sold.

  • 59 institutional investors held Y-mAbs Therapeutics (YMAB) as of Q2 2019, up from 45 in Q1 2019.
  • Funds reported $251M of Y-mAbs Therapeutics stock for Q2 2019, up 13% quarter-over-quarter.
  • 20 funds opened new Y-mAbs Therapeutics positions in Q2 2019 and 4 closed out, a net change of +16 holders.
  • The largest Y-mAbs Therapeutics buyer in Q2 2019 was BlackRock, an estimated $18M added.
  • The largest Y-mAbs Therapeutics seller in Q2 2019 was Scopia Capital Management, an estimated $24.1M sold.

Based on aggregated 13F filings for Q2 2019.